package com.hystrix.helloworld;

import static org.junit.Assert.*;

import java.util.concurrent.Future;

import org.junit.Test;

import com.netflix.hystrix.HystrixCommand;
import com.netflix.hystrix.HystrixCommandGroupKey;

/**
 * Sample {@link HystrixCommand} showing a basic fallback implementation.
 */
public class CommandHelloFailure extends HystrixCommand<String> {

	private final String name;

	public CommandHelloFailure(String name) {
		super(HystrixCommandGroupKey.Factory.asKey("ExampleGroup"));
		this.name = name;
	}

	@Override
	protected String run() {
		throw new RuntimeException("this command always fails");
	}

	@Override
	protected String getFallback() {
		return "Hello Failure " + name + "!";
	}

	public static class UnitTest {

		@Test
		public void testSynchronous() {
			assertEquals("Hello Failure World!", new CommandHelloFailure("World").execute());
			assertEquals("Hello Failure Bob!", new CommandHelloFailure("Bob").execute());
		}

		@Test
		public void testAsynchronous1() throws Exception {
			assertEquals("Hello Failure World!", new CommandHelloFailure("World").queue().get());
			assertEquals("Hello Failure Bob!", new CommandHelloFailure("Bob").queue().get());
		}

		@Test
		public void testAsynchronous2() throws Exception {

			Future<String> fWorld = new CommandHelloFailure("World").queue();
			Future<String> fBob = new CommandHelloFailure("Bob").queue();

			assertEquals("Hello Failure World!", fWorld.get());
			assertEquals("Hello Failure Bob!", fBob.get());
		}
	}

}
